Convert your R45 hubs to fit Shimano HG11, HG12, Micro Spline, or SRAM XDR cassettes with our Gen 4 conversion kit. 

Gen 4 conversion kits include a pre-assembled axle, driveshell, adjusting clamp, and QR axle ends for a plug and play swap. Installation requires a 2.5mm hex key and T10 Torx tool.

• Compatible with R45 hubs. Serial numbers will begin with 631.
• Not compatible with Classic hubs.
• 130x9mm QR axle.
• Available with stainless steel or ceramic bearings.
• Available in Silver or Black.